Also run check on base branch swap

I accidentally selected master as base branch when creating the PR. When changing this to develop, the checks where not triggered. To fix this I added the `edited` type, which is used when changing the base ref.

See actions/runner#980

.github/workflows/pr-check.yml

@@ -2,6 +2,7 @@ name: PR Check
 
 on:
   pull_request:
+    types: [synchronize, opened, reopened, edited]
     branches:
       - master
       - develop